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-rw-r--r--collectors/proc.plugin/proc_vmstat.c259
1 files changed, 259 insertions, 0 deletions
diff --git a/collectors/proc.plugin/proc_vmstat.c b/collectors/proc.plugin/proc_vmstat.c
new file mode 100644
index 0000000..a9712b2
--- /dev/null
+++ b/collectors/proc.plugin/proc_vmstat.c
@@ -0,0 +1,259 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_VMSTAT_NAME "/proc/vmstat"
+
+int do_proc_vmstat(int update_every, usec_t dt) {
+ (void)dt;
+
+ static procfile *ff = NULL;
+ static int do_swapio = -1, do_io = -1, do_pgfaults = -1, do_numa = -1;
+ static int has_numa = -1;
+
+ static ARL_BASE *arl_base = NULL;
+ static unsigned long long numa_foreign = 0ULL;
+ static unsigned long long numa_hint_faults = 0ULL;
+ static unsigned long long numa_hint_faults_local = 0ULL;
+ static unsigned long long numa_huge_pte_updates = 0ULL;
+ static unsigned long long numa_interleave = 0ULL;
+ static unsigned long long numa_local = 0ULL;
+ static unsigned long long numa_other = 0ULL;
+ static unsigned long long numa_pages_migrated = 0ULL;
+ static unsigned long long numa_pte_updates = 0ULL;
+ static unsigned long long pgfault = 0ULL;
+ static unsigned long long pgmajfault = 0ULL;
+ static unsigned long long pgpgin = 0ULL;
+ static unsigned long long pgpgout = 0ULL;
+ static unsigned long long pswpin = 0ULL;
+ static unsigned long long pswpout = 0ULL;
+
+ if(unlikely(!arl_base)) {
+ do_swapio = config_get_boolean_ondemand("plugin:proc:/proc/vmstat", "swap i/o", CONFIG_BOOLEAN_AUTO);
+ do_io = config_get_boolean("plugin:proc:/proc/vmstat", "disk i/o", 1);
+ do_pgfaults = config_get_boolean("plugin:proc:/proc/vmstat", "memory page faults", 1);
+ do_numa = config_get_boolean_ondemand("plugin:proc:/proc/vmstat", "system-wide numa metric summary", CONFIG_BOOLEAN_AUTO);
+
+
+ arl_base = arl_create("vmstat", NULL, 60);
+ arl_expect(arl_base, "pgfault", &pgfault);
+ arl_expect(arl_base, "pgmajfault", &pgmajfault);
+ arl_expect(arl_base, "pgpgin", &pgpgin);
+ arl_expect(arl_base, "pgpgout", &pgpgout);
+ arl_expect(arl_base, "pswpin", &pswpin);
+ arl_expect(arl_base, "pswpout", &pswpout);
+
+ if(do_numa == CONFIG_BOOLEAN_YES || (do_numa == CONFIG_BOOLEAN_AUTO && get_numa_node_count() >= 2)) {
+ arl_expect(arl_base, "numa_foreign", &numa_foreign);
+ arl_expect(arl_base, "numa_hint_faults_local", &numa_hint_faults_local);
+ arl_expect(arl_base, "numa_hint_faults", &numa_hint_faults);
+ arl_expect(arl_base, "numa_huge_pte_updates", &numa_huge_pte_updates);
+ arl_expect(arl_base, "numa_interleave", &numa_interleave);
+ arl_expect(arl_base, "numa_local", &numa_local);
+ arl_expect(arl_base, "numa_other", &numa_other);
+ arl_expect(arl_base, "numa_pages_migrated", &numa_pages_migrated);
+ arl_expect(arl_base, "numa_pte_updates", &numa_pte_updates);
+ }
+ else {
+ // Do not expect numa metrics when they are not needed.
+ // By not adding them, the ARL will stop processing the file
+ // when all the expected metrics are collected.
+ // Also ARL will not parse their values.
+ has_numa = 0;
+ do_numa = CONFIG_BOOLEAN_NO;
+ }
+ }
+
+ if(unlikely(!ff)) {
+ char filename[FILENAME_MAX + 1];
+ snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/vmstat");
+ ff = procfile_open(config_get("plugin:proc:/proc/vmstat", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
+ if(unlikely(!ff)) return 1;
+ }
+
+ ff = procfile_readall(ff);
+ if(unlikely(!ff)) return 0; // we return 0, so that we will retry to open it next time
+
+ size_t lines = procfile_lines(ff), l;
+
+ arl_begin(arl_base);
+ for(l = 0; l < lines ;l++) {
+ size_t words = procfile_linewords(ff, l);
+ if(unlikely(words < 2)) {
+ if(unlikely(words)) error("Cannot read /proc/vmstat line %zu. Expected 2 params, read %zu.", l, words);
+ continue;
+ }
+
+ if(unlikely(arl_check(arl_base,
+ procfile_lineword(ff, l, 0),
+ procfile_lineword(ff, l, 1)))) break;
+ }
+
+ // --------------------------------------------------------------------
+
+ if(pswpin || pswpout || do_swapio == CONFIG_BOOLEAN_YES) {
+ do_swapio = CONFIG_BOOLEAN_YES;
+
+ static RRDSET *st_swapio = NULL;
+ static RRDDIM *rd_in = NULL, *rd_out = NULL;
+
+ if(unlikely(!st_swapio)) {
+ st_swapio = rrdset_create_localhost(
+ "system"
+ , "swapio"
+ , NULL
+ , "swap"
+ , NULL
+ , "Swap I/O"
+ , "KiB/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_VMSTAT_NAME
+ , NETDATA_CHART_PRIO_SYSTEM_SWAPIO
+ , update_every
+ , RRDSET_TYPE_AREA
+ );
+
+ rd_in = rrddim_add(st_swapio, "in", NULL, sysconf(_SC_PAGESIZE), 1024, RRD_ALGORITHM_INCREMENTAL);
+ rd_out = rrddim_add(st_swapio, "out", NULL, -sysconf(_SC_PAGESIZE), 1024, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(st_swapio);
+
+ rrddim_set_by_pointer(st_swapio, rd_in, pswpin);
+ rrddim_set_by_pointer(st_swapio, rd_out, pswpout);
+ rrdset_done(st_swapio);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(do_io) {
+ static RRDSET *st_io = NULL;
+ static RRDDIM *rd_in = NULL, *rd_out = NULL;
+
+ if(unlikely(!st_io)) {
+ st_io = rrdset_create_localhost(
+ "system"
+ , "pgpgio"
+ , NULL
+ , "disk"
+ , NULL
+ , "Memory Paged from/to disk"
+ , "KiB/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_VMSTAT_NAME
+ , NETDATA_CHART_PRIO_SYSTEM_PGPGIO
+ , update_every
+ , RRDSET_TYPE_AREA
+ );
+
+ rd_in = rrddim_add(st_io, "in", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_out = rrddim_add(st_io, "out", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(st_io);
+
+ rrddim_set_by_pointer(st_io, rd_in, pgpgin);
+ rrddim_set_by_pointer(st_io, rd_out, pgpgout);
+ rrdset_done(st_io);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(do_pgfaults) {
+ static RRDSET *st_pgfaults = NULL;
+ static RRDDIM *rd_minor = NULL, *rd_major = NULL;
+
+ if(unlikely(!st_pgfaults)) {
+ st_pgfaults = rrdset_create_localhost(
+ "mem"
+ , "pgfaults"
+ , NULL
+ , "system"
+ , NULL
+ , "Memory Page Faults"
+ , "faults/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_VMSTAT_NAME
+ , NETDATA_CHART_PRIO_MEM_SYSTEM_PGFAULTS
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(st_pgfaults, RRDSET_FLAG_DETAIL);
+
+ rd_minor = rrddim_add(st_pgfaults, "minor", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_major = rrddim_add(st_pgfaults, "major", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(st_pgfaults);
+
+ rrddim_set_by_pointer(st_pgfaults, rd_minor, pgfault);
+ rrddim_set_by_pointer(st_pgfaults, rd_major, pgmajfault);
+ rrdset_done(st_pgfaults);
+ }
+
+ // --------------------------------------------------------------------
+
+ // Ondemand criteria for NUMA. Since this won't change at run time, we
+ // check it only once. We check whether the node count is >= 2 because
+ // single-node systems have uninteresting statistics (since all accesses
+ // are local).
+ if(unlikely(has_numa == -1))
+
+ has_numa = (numa_local || numa_foreign || numa_interleave || numa_other || numa_pte_updates ||
+ numa_huge_pte_updates || numa_hint_faults || numa_hint_faults_local || numa_pages_migrated) ? 1 : 0;
+
+ if(do_numa == CONFIG_BOOLEAN_YES || (do_numa == CONFIG_BOOLEAN_AUTO && has_numa)) {
+ do_numa = CONFIG_BOOLEAN_YES;
+
+ static RRDSET *st_numa = NULL;
+ static RRDDIM *rd_local = NULL, *rd_foreign = NULL, *rd_interleave = NULL, *rd_other = NULL, *rd_pte_updates = NULL, *rd_huge_pte_updates = NULL, *rd_hint_faults = NULL, *rd_hint_faults_local = NULL, *rd_pages_migrated = NULL;
+
+ if(unlikely(!st_numa)) {
+ st_numa = rrdset_create_localhost(
+ "mem"
+ , "numa"
+ , NULL
+ , "numa"
+ , NULL
+ , "NUMA events"
+ , "events/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_VMSTAT_NAME
+ , NETDATA_CHART_PRIO_MEM_NUMA
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(st_numa, RRDSET_FLAG_DETAIL);
+
+ // These depend on CONFIG_NUMA in the kernel.
+ rd_local = rrddim_add(st_numa, "local", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_foreign = rrddim_add(st_numa, "foreign", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_interleave = rrddim_add(st_numa, "interleave", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_other = rrddim_add(st_numa, "other", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+
+ // The following stats depend on CONFIG_NUMA_BALANCING in the
+ // kernel.
+ rd_pte_updates = rrddim_add(st_numa, "pte_updates", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_huge_pte_updates = rrddim_add(st_numa, "huge_pte_updates", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_hint_faults = rrddim_add(st_numa, "hint_faults", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_hint_faults_local = rrddim_add(st_numa, "hint_faults_local", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_pages_migrated = rrddim_add(st_numa, "pages_migrated", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(st_numa);
+
+ rrddim_set_by_pointer(st_numa, rd_local, numa_local);
+ rrddim_set_by_pointer(st_numa, rd_foreign, numa_foreign);
+ rrddim_set_by_pointer(st_numa, rd_interleave, numa_interleave);
+ rrddim_set_by_pointer(st_numa, rd_other, numa_other);
+
+ rrddim_set_by_pointer(st_numa, rd_pte_updates, numa_pte_updates);
+ rrddim_set_by_pointer(st_numa, rd_huge_pte_updates, numa_huge_pte_updates);
+ rrddim_set_by_pointer(st_numa, rd_hint_faults, numa_hint_faults);
+ rrddim_set_by_pointer(st_numa, rd_hint_faults_local, numa_hint_faults_local);
+ rrddim_set_by_pointer(st_numa, rd_pages_migrated, numa_pages_migrated);
+
+ rrdset_done(st_numa);
+ }
+
+ return 0;
+}
+